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Female:
- Body attenuated at both ends.
- Lips amalgamated.
- Two whorls of minute cephalic sensilla visible on head.
- Amphid aperture unispiral, situated 2,5 head widths from anterior
end.
- Buccal cavity (stoma) a long, narrow, sclerotized tube, ending in
the posterior half of the median bulb.
- One small tooth at base of the stoma.
- Median bulb small, oval with a joint-like structure within its
lumen.
- Isthmus tubular.
- Basal bulb spherical, muscular, with elongated valvular
apparatus with transversely striated plates.
- Valve plates horizontally divided, with division reaching into
musculature of basal bulb, giving the bulb a bipartite or jointed
appearance.
- Cardia distinct.
- Intestine thick-walled with large granules within its cells.
- Lateral field wide, about 30% of body diameter, with two rows of
somatic pores, one row dorsosublaterally and one row in a
ventrosublateral position.
- Didelphic, amphidelphic
- Tail conoid, curved ventrally
Male:
- General morphology as for female
- Diorchic, with testes outstretched, anterior testis the larger,
- Spicules arcuate, gubernaculum present, no bursa.
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